From 8c0bea8841f05ec3318aee6f06be28c587c9128d Mon Sep 17 00:00:00 2001
From: Louise Crow <louise.crow@gmail.com>
Date: Tue, 25 Sep 2012 10:23:54 +0100
Subject: Move the usage notice functions to a module so they can be used
 elsewhere.

---
 lib/tasks/usage.rb | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 lib/tasks/usage.rb

(limited to 'lib/tasks/usage.rb')

diff --git a/lib/tasks/usage.rb b/lib/tasks/usage.rb
new file mode 100644
index 000000000..d6aac454d
--- /dev/null
+++ b/lib/tasks/usage.rb
@@ -0,0 +1,26 @@
+module Usage
+
+    def usage_message message
+        puts ''
+        puts message
+        puts ''
+        exit 0
+    end
+
+    def check_for_env_vars(env_vars, example)
+        missing = []
+        env_vars.each do |env_var|
+            unless ENV[env_var]
+                missing << env_var
+            end
+        end
+        if !missing.empty?
+            usage = "Usage: This task requires #{env_vars.to_sentence} - missing #{missing.to_sentence}"
+            if example
+                usage += "\nExample: #{example}"
+            end
+            usage_message usage
+        end
+    end
+
+end
\ No newline at end of file
-- 
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